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Residence time contours?

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Old   February 8, 2008, 18:42
Default Residence time contours?
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I want to plot contours of residence time to determine the age of air in an enclosed space. Can anybody help me? Simply plotting 3d pathlines does not help at all - the flow is too messy to visualize.

What I need is a 2d contour plot of residence time based on how long it takes the discrete phase to exit one of my sub-volumes when released as a group from a face.

Please help - i'm really stuck here!

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